Radiant gas-electric dual-purpose preheating furnace

Abstract

The utility model provides a kind of radiation type gas-electric dual-purpose preheating furnace, including furnace body, transmission component, gas heating assembly and electric heating assembly, the transmission component, the gas heating assembly and the electric heating assembly are all installed in the inside of the furnace body, workpiece is transmitted by the transmission component and passes through the furnace body;The gas heating assembly includes several upper gas heating assemblies and several lower gas heating assemblies respectively arranged in the upper and lower positions of the transmission component, and the electric heating assembly includes several upper electric heating assemblies and several lower electric heating assemblies respectively arranged in the upper and lower positions of the transmission component.The radiation type gas-electric dual-purpose preheating furnace can switch heating mode according to customer demand, use more convenient, lower cost.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial furnaces, and more precisely to a radiant gas-electric dual-purpose preheating furnace. Background Technology

[0002] Preheating furnaces are commonly used heating equipment in industrial production. When workpieces undergo high-temperature processing, they require high-temperature heating by other equipment. Preheating furnaces preheat the workpieces, reducing heating time and improving processing efficiency. Preheating furnaces are widely used in the preheating process of various workpiece production. The preheating effect of the furnace is crucial to the final product performance of the workpiece.

[0003] A preheating furnace generally consists of a furnace body containing a heating chamber, where heating components are installed. Existing preheating furnaces typically employ a single heating method, such as gas or electricity, which cannot be flexibly selected based on local natural gas and electricity prices. When different heating methods have varying costs, users need to prepare multiple preheating furnaces to switch between them as needed, resulting in a large footprint and inconvenient operation. Furthermore, existing preheating furnaces are mostly monolithic structures, leading to easy cross-flow of furnace gas between zones, making precise temperature control difficult and affecting workpiece preheating quality. They also exhibit poor insulation performance and high energy consumption. When using gas heating, the flue gas from existing preheating furnaces is usually directly emitted, resulting in energy waste. Additionally, some preheating furnaces lack effective energy linkage mechanisms with other equipment (such as degreasing furnaces).

[0004] Therefore, there is a need in this field for a preheating furnace that offers flexible and switchable heating methods, precise temperature control, and high energy efficiency. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a radiant gas-electric dual-purpose preheating furnace, which improves the furnace body and adopts a heating method that can switch between gas heating and electric heating, so as to achieve the effect of flexible switching of the preheating furnace heating mode and precise temperature control.

[0006] To achieve the above objectives, this utility model provides a radiant gas-electric dual-purpose preheating furnace, comprising a furnace body, a transmission assembly, a gas heating assembly, and an electric heating assembly. The transmission assembly, the gas heating assembly, and the electric heating assembly are all installed inside the furnace body, and the workpiece is transmitted through the furnace body by the transmission assembly. The gas heating assembly includes a plurality of upper gas heating assemblies and a plurality of lower gas heating assemblies respectively disposed above and below the transmission assembly, and the electric heating assembly includes a plurality of upper electric heating assemblies and a plurality of lower electric heating assemblies respectively disposed above and below the transmission assembly.

[0007] Preferably, the lower gas heating components are aligned with the upper gas heating components, and the lower electric heating components are aligned with the upper electric heating components; each group of aligned lower and upper gas heating components, lower and upper electric heating components, forms a segment.

[0008] Preferably, the furnace body includes a furnace wall and a furnace roof installed on top of the furnace wall.

[0009] Preferably, both the furnace wall and the furnace roof are made of full fiber structure.

[0010] Preferably, both the upper gas heating component and the upper electric heating component are installed in conjunction with the furnace top.

[0011] Preferably, the transmission component includes a mesh belt, a drive motor, and a frequency converter. The drive motor drives the mesh belt to move through a transmission mechanism, and the frequency converter is electrically connected to the drive motor.

[0012] Preferably, a muffle is provided inside the furnace body, and the transmission component passes through the muffle; nitrogen gas is injected into the muffle as a protective atmosphere; the gas heating component and the electric heating component are both located outside the muffle.

[0013] Preferably, the lower gas heating assembly and the upper gas heating assembly are direct-injection high-speed burners.

[0014] Preferably, the discharge port of the furnace body is connected to the inlet of the front chamber, the discharge port of the front chamber is connected to the inlet of the degreasing furnace, and the side of the furnace body is connected to the degreasing furnace through a flue pipe.

[0015] Preferably, the flue pipe is equipped with an anti-backflow valve to prevent flue gas from flowing back into the furnace body.

[0016] Compared with existing technologies, the advantages of this utility model are as follows: the radiant gas-electric dual-purpose preheating furnace can switch heating modes according to customer needs, making it more convenient to use and lower in cost; the radiant gas-electric dual-purpose preheating furnace adopts a zoned design, which can effectively reduce gas crossflow between zones, ensure temperature control accuracy, temperature control stability and heat preservation accuracy, and reduce energy consumption; the radiant gas-electric dual-purpose preheating furnace connects to the degreasing furnace through the exhaust pipe, allowing the flue gas to be transferred to the degreasing furnace to heat the workpiece during natural gas heating, improving energy utilization, and simultaneously reducing the oil and gas concentration in the degreasing furnace through the flue gas, preventing oil and gas explosions and enhancing safety; the radiant gas-electric dual-purpose preheating furnace, combined with the installation of a natural gas leak detector, offers even higher safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] like Figure 1 The image shown is a front view of a radiant gas-electric dual-purpose preheating furnace connected to a degreasing furnace via a front chamber, according to this application.

[0019] like Figure 2 The image shown is a top view of a radiant gas-electric dual-purpose preheating furnace connected to a degreasing furnace via a front chamber, according to this application.

[0020] like Figure 3 The image shown is a front view of a radiant gas-electric dual-purpose preheating furnace according to this application. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described through specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] like Figures 1 to 3 As shown, this application discloses a radiant gas-electric dual-purpose preheating furnace, comprising a furnace body 10, a transmission assembly 11, a gas heating assembly 12, and an electric heating assembly 13. The transmission assembly 11, gas heating assembly 12, and electric heating assembly 13 are all installed inside the furnace body 10. The workpiece is transmitted through the furnace body 10 by the transmission assembly 11. The gas heating assembly 12 includes several upper gas heating components 122 and several lower gas heating components 121 respectively positioned above and below the transmission assembly 11. The electric heating assembly 13 includes several upper electric heating components 132 and several lower electric heating components 131 respectively positioned above and below the transmission assembly 11. By controlling the switching between the gas heating assembly 12 and the electric heating assembly 13, the gas heating and electric heating functions can be switched. Users can choose the heating method according to local natural gas and electricity prices, and can also conveniently and quickly change the heating method according to needs after changes in the usage environment, making it more flexible and helping to reduce operating costs.

[0023] Specifically, the lower gas heating assembly 121 is aligned with the upper gas heating assembly 122, and the lower electric heating assembly 131 is aligned with the upper electric heating assembly 132. Each aligned lower gas heating assembly 121 and upper gas heating assembly 122, and lower electric heating assembly 131 and upper electric heating assembly 132, form a section. Preferably, each section within the furnace body 10 is relatively independent, which can reduce furnace gas crossflow between sections, ensure the temperature control accuracy, temperature control stability, and heat preservation accuracy of each section, and also reduce energy consumption. Since the workpiece is driven by the transmission assembly 11 to pass through each section sequentially, it is preferable to set the heating state of each section separately to further improve the temperature control accuracy and heat preservation accuracy, and ensure the performance of the processed workpiece.

[0024] The furnace body 10 includes a furnace wall 101 and a furnace roof 102 installed on top of the furnace wall. Preferably, both the furnace wall 101 and the furnace roof 102 are made of all-fiber structure to ensure heat insulation performance. The upper gas heating component 122 and the upper electric heating component 132 are both installed in conjunction with the furnace roof 102.

[0025] The transmission component 11 preferably includes a mesh belt, a drive motor, and a frequency converter. The drive motor drives the mesh belt to move through a transmission mechanism. The frequency converter is electrically connected to the drive motor. The output power of the drive motor is adjusted by the frequency converter, thereby adjusting the speed at which the workpiece passes through the furnace body 10 and increasing the preheating accuracy.

[0026] The furnace body 10 preferably has a muffle 100, through which the transmission assembly 11 passes. Nitrogen gas is purged into the muffle 100 as a protective atmosphere. By setting up the muffle 100 and purging it with a protective atmosphere, the internal oxygen concentration can be ensured to be below 50 PPM. The gas heating assembly 12 and the electric heating assembly 13 are both located outside the muffle 100 and isolated from the protective atmosphere inside the muffle 100 to improve the preheating and heat preservation effect.

[0027] The lower gas heating assembly 121 and the upper gas heating assembly 122 preferably employ direct-injection high-speed burners, with the direct-injection high-speed burner of the lower gas heating assembly 121 facing upwards and the direct-injection high-speed burner of the upper gas heating assembly 122 facing downwards. Using direct-injection high-speed burners allows for uniform heating of the workpiece using high-speed airflow.

[0028] The lower electric heating component 131 and the upper electric heating component 132 adopt an upper and lower deviation control method to maintain the uniformity of heating.

[0029] The discharge port of the furnace body 10 is connected to the inlet of the front chamber 2, and the discharge port of the front chamber 2 is connected to the inlet of the degreasing furnace 3. The side of the furnace body 10 is connected to the degreasing furnace 3 through the exhaust pipe 14. Preferably, the exhaust pipe 14 is equipped with an anti-backflow valve to prevent flue gas from flowing back into the furnace body 10. When the gas heating component 12 is working, the generated flue gas can enter the degreasing furnace 3 through the exhaust pipe 14 to heat the workpiece, realizing the secondary utilization of energy, reducing overall energy consumption, and at the same time, the flue gas can also reduce the oil and gas concentration in the degreasing furnace, prevent oil and gas explosions, and enhance production safety.

[0030] The furnace body 10 is preferably equipped with several natural gas-specific leak detectors, which are connected to an external natural gas leak detection and alarm system to issue an alarm in a timely manner when a leak occurs, thereby improving production safety.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radiant gas-electric dual-purpose preheating furnace, characterized in that, The system includes a furnace body, a transmission assembly, a gas heating assembly, and an electric heating assembly. The transmission assembly, the gas heating assembly, and the electric heating assembly are all installed inside the furnace body, and the workpiece is transmitted through the furnace body by the transmission assembly. The gas heating assembly includes several upper gas heating assemblies and several lower gas heating assemblies respectively disposed above and below the transmission assembly. The electric heating assembly includes several upper electric heating assemblies and several lower electric heating assemblies respectively disposed above and below the transmission assembly.

2. The radiant gas-electric dual-purpose preheating furnace as described in claim 1, characterized in that, The lower gas heating components are aligned with the upper gas heating components, and the lower electric heating components are aligned with the upper electric heating components; each group of aligned lower and upper gas heating components, lower and upper electric heating components, forms a segment.

3. The radiant gas-electric dual-purpose preheating furnace as described in claim 1, characterized in that, The furnace body includes furnace walls and a furnace roof installed on top of the furnace walls.

4. The radiant gas-electric dual-purpose preheating furnace as described in claim 3, characterized in that, Both the furnace wall and the furnace roof are made of full fiber structure.

5. The radiant gas-electric dual-purpose preheating furnace as described in claim 3, characterized in that, Both the upper gas heating component and the upper electric heating component are installed in conjunction with the furnace top.

6. The radiant gas-electric dual-purpose preheating furnace as described in claim 1, characterized in that, The transmission component includes a mesh belt, a drive motor, and a frequency converter. The drive motor drives the mesh belt to move through a transmission mechanism, and the frequency converter is electrically connected to the drive motor.

7. The radiant gas-electric dual-purpose preheating furnace as described in claim 1, characterized in that, A muffle is installed inside the furnace, and the transmission component passes through the muffle; nitrogen gas is injected into the muffle as a protective atmosphere; the gas heating component and the electric heating component are both located outside the muffle.

8. The radiant gas-electric dual-purpose preheating furnace as described in claim 1, characterized in that, The lower gas heating assembly and the upper gas heating assembly both employ direct-injection high-speed burners.

9. The radiant gas-electric dual-purpose preheating furnace as described in claim 1, characterized in that, The discharge port of the furnace body is connected to the inlet of the front chamber, the discharge port of the front chamber is connected to the inlet of the degreasing furnace, and the side of the furnace body is connected to the degreasing furnace through a flue pipe.

10. The radiant gas-electric dual-purpose preheating furnace as described in claim 9, characterized in that, The exhaust pipe is equipped with an anti-backflow valve to prevent flue gas from flowing back into the furnace body.

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